Web Release Date: September 11,
New Approach to Writing and Simultaneous Reading of Micropatterns: Combining Surface Plasmon Resonance Imaging with Scanning Electrochemical Microscopy (SECM)
and
Groupe Chimie de la Reconnaissance et Etude des Assemblages Biologiques (UMR SPrAM 5819), Département de Recherche Fondamental sur la matière condensée, CEA Grenoble, 17, rue des Martyrs, 38054 Grenoble, Cedex 09, France, and Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
Received March 22, 2004
In Final Form: July 26, 2004
Abstract:
This work establishes the compatibility of surface plasmon resonance imaging (SPR-i) with the visualization of localized electropolymerization. The "writing" of polypyrrole and polypyrrole-oligonucleotide patterns onto thin gold films is demonstrated using scanning electrochemical microcopy (SECM), while an optical method, SPR-i, simultaneously detected the formed micropatterns. The combination of these two methods, SECM/SPR-i, has the advantage of not only controlling the patterning process but also providing unique information on the micropattern formation. The influence of the pulsing time and the monomer concentration on the spot size and its characteristics has been investigated in detail using SPR-i. Fluorescence microscopy and atomic force microscopy have also been used to support the data obtained by SPR-i.
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